Description

The CA3280AE is an electronic component that belongs to the IC chips category. It is a type of operational amplifier that consists of two variable amplifiers designed to reduce the initial input offset voltage and offset voltage variation concerning changes in programming currents. This design aims to reduce "AGC thump," which is an objectionable characteristic of many AGC systems. The amplifier's critical portions employ interdigitation or crosscoupling to reduce dependence upon thermal and processing variables.

Specifications and features

The CA3280AE features low initial input offset voltage (500µV maximum) for CA3280A, excellent matching of the two amplifiers for all characteristics, low offset voltage change versus IABC (500µV maximum), flexible supply voltage range (+/-2V to +/-15V), and internal current-driven linearizing diodes to reduce the external input current to an offset component. Additionally, the component has a low offset voltage drift of up to 5µV/oC for CA3280A.

Application Scenarios

The CA3280AE can be used in various applications, including voltage controlled amplifiers, voltage controlled oscillators, demodulators, sample and hold, instrumentation amplifiers, function generators, triangle wave-to-sine wave converters, comparators, or even as an audio preamplifier.

Comparison

• Low initial input offset voltage reduces AGC thump.
• Internal current-driven linearizing diodes reduce the external input current to an offset component.
• Flexible supply voltage range makes it easier to use.
• Excellent matching of the two amplifiers for all characteristics.

• Not suitable for applications that require precise amplification.
• May not work correctly in the presence of thermal and processing variables.